(Union County, 10', 1997, 41-63-(a) across a creek SW of North Sioux City, Big Sioux Township, Union County, SD. Dakota Dunes Blvd W. 0.1 miles from jct with I29 exit 1, N. on Sioux Point Rd. 0.5 miles, W. on Flurie Rd. 0.25 miles to the bridge on the S. side of the road. (7-10-09, N42 30.567 W96 30.183) Photos by Jack Schmidt.